She told CNN's Erin Burnett that the road was blocked, and a driver spinning in the mud almost hit a wall.

"There was a need. I had the means, so I wanted to help out ... we had chainsaws sitting in a closet and they needed to be used," said Sister Margaret.

An off-duty Miami-Dade officer drove by and spotted the nun's hard work and told her that other workers would remove the tree.

However, Sister Margaret told the officer that it would take too long, and it needed to be done now.

She said others helped her remove the tree and it was a good community-bonding moment.

"I've been in education for more than 30 years, and we teach our students to do what you can to help other people, don't just think about yourselves, so that's what I wanted to do," said Sister Margret.

The tweet by Miami-Dade police was re-tweeted 2,300 times in 14 hours.